CIRCADIAN Scrabble 14 Words With Friends 17 Scrabble letter values: C3I1R1C3A1D2I1A1N1 = 14 Definition adjective of or relating to biological processes occurring at 24-hour intervals. Examples “circadian rhythms” See all 81 words you can make from CIRCADIAN → 9-letter words Words starting with C Words ending with N ← Unscramble different letters